Load Pin Optional Features

Strainsert offers a variety of load pin design options to fully optimize the force measurement solution.

Dual Bridge Circuits

Option Pin SmallDual bridge gaging provides two independent strain gage circuits. This option is advantageous for controlling multiple feedback systems as well as providing redundant force-measuring capability.

4-20 ma Internal Amplifier

Internal AmpIntegral signal conditioning, built into the pin, provides a high level 4 – 20 ma output, while maintaining pin ruggedness and durability. This option is ideal for noisy environments or where long cable length are required.

Bi-Axial Clevis Pins

Bi-AxialWhen both the magnitude and the direction of the load are unknown, the vector measurement is possible using a Strainsert force sensing pin instrumented with two strain-gage bridges oriented 90° apart around the circumference. The cross-section of the pin shows the two sets of strain gages, the Y bridge will sense force component Py, while the X bridge will sense forces in the Px direction, 90° to Py. The outputs from the two bridges, Ex and Ey, can be measured and the resultant force magnitude and direction can be determined:

P = K * the square root of Ex squared + Ey squared.
Where K = constant derived from calibration data
Direction: Ø = inverse tangent (Ey / Ex)

Specification Detail

  • Bridge Resistance – 350ohm (Nom.)
  • Excitation – 12V ac or dc (Max.)
  • Non-Repeatability – ±0.15% F.S.O (Nom.)
  • Non-Linearity – ±0.50% F.S.O (Nom.) on Primary axes*
  • Pin Material – Stainless Steel 17-4; or higher strength stainless or alloy steels
  • Output Signal – 2-mv/V (Nom) custom designs may effect output

Applications

  • Sheave applications with variable angles
  • Any pin joint with rotating loading members
  • Research and Development
  • Aircraft component testing
  • Loader Buckets
  • Hydraulic Actuators
  • Mooring Lines
  • Landing gear

Featured

  • Pin Diameters from 1″ and Larger
  • Full Scale Endpoint Checks at 45 degree increments or specified range of interest
  • Internal Strain Gaging
  • 5 Step loading calibration on primary X and Y axes (2 runs each)
  • Force Component Resolution and Direction Capability
  • 2 Year Warranty

* Certain custom pin geometry and bridge to bridge effects (cross-talk) may result in a measurement accuracy of 5% full scale or greater. For such cases, Strainsert can provide a correction algorithm to minimize errors.

Options

  • Submerged/High Pressure
  • 4-20 ma Output
  • Permanently Attached Cable
  • Specials from .5″ to 1″ diameter
  • System Calibration
  • High Strength Material for Additional Force Capabilities

Deep Sea Clevis Pin System

Deep SeaThe Strainsert deep sea/high pressure Clevis Pin provides the ability to measure force at clevis joints under high pressure conditions. Complete systems are available, and include the instrumented Clevis Pin, cabling, and a digital display indicator.

Specification Detail

  • Output – 4-20 ma Loop Power or mv/V
  • Input – 13 to 28V dc (4-20 ma Systems), 10V max excitation (mv/V Output)
  • Non-Repeatability – ±0.15% F.S.O (Nom.)
  • Non-Linearity – ±0.50% F.S.O (Nom.)
  • Operating Temperature – 15 degrees F to 150 degrees F
  • Storage Temperature – -40 degrees F to 160 degrees F
  • Receptacle – Burton 55 Series (316 Stainless), Brantner or Customer Specified
  • Cable Assembly – High Pressure, Marine (Lengths as Required)
  • Pin Material – Monel, or 17-4 Stainless (Passivated, or other)

Applications

  • Off-Shore Platform Crane, Winch Hook and Sheave Attachments
  • Deep Sea Excavation and Trenching Systems
  • Marine Research and Development
  • Research and Development
  • Towline Monitoring
  • Mooring Lines

Options

  • Uni-Axial, Bi-Axial (Shown above) and Dual Bridge Force Sensing
  • Integral Signal Conditioning

Features

  • System Calibration (5 Steps 2 Runs)
  • 1500 psi Standard Rating
  • Internal Strain Gaging
  • Indicator Capabilities
  • Custom Fit
  • 2 Year Warranty

Intrinsically Rated Force Sensing Clevis Pins

Intrinsically RatedThe Strainsert intrinsically rated force sensing clevis pin provides force measurement capabilities in hazardous environments. They are rated for Class I, Division 1, Group A, B, C, D – Class II, Division 1, Group E, F and G. They also have a T4 temperature rating – Demko Approved EEx ia IIC T4.

Applications

  • Explosives
  • Chemical
  • Mining
  • Oil
  • Engine Tests
  • Aerospace

Strainsert - for superior internally gaged force transducers.
Strainsert stands for:

  • Product Quality
  • Knowledgeable Technical Staff
  • Standard and Custom Designs
  • Customer Service
  • Comprehensive Testing

Contact Strainsert
For information on load pins, force sensing bolts, load cells, tension links or our high quality custom products, Contact Us for further assistance.